EP 2889631 A1 20150701 - Current sensor, current measuring module, and smart meter
Title (en)
Current sensor, current measuring module, and smart meter
Title (de)
Stromsensor, Strommessmodul und intelligentes Messgerät
Title (fr)
Capteur de courant, module de mesure de courant et compteur intelligent
Publication
Application
Priority
JP 2013268067 A 20131225
Abstract (en)
A current sensor comprises: a plurality of magnetoresistance elements whose resistance value changes by application of an current-induced magnetic field from a current-to-be-measured; and a selection circuit that selects one magnetoresistance element from these plurality of magnetoresistance elements and outputs a signal of a selected magnetoresistance element. In the plurality of magnetoresistance elements, relationships between a magnitude of the applied current-induced magnetic field and the resistance value are different from each other.
IPC 8 full level
G01R 15/09 (2006.01); G01R 15/20 (2006.01)
CPC (source: EP US)
G01R 15/09 (2013.01 - EP US); G01R 15/205 (2013.01 - EP US); G01R 19/0092 (2013.01 - US); G01R 33/09 (2013.01 - US)
Citation (search report)
- [XY] WO 2012053296 A1 20120426 - ALPS GREEN DEVICES CO LTD [JP], et al
- [Y] JP 2004132790 A 20040430 - FUJI ELECTRIC HOLDINGS
- [A] US 2013082698 A1 20130404 - FUKUI HIROFUMI [JP]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2889631 A1 20150701; JP 2015125020 A 20150706; JP 6415813 B2 20181031; US 10254315 B2 20190409; US 2015177285 A1 20150625
DOCDB simple family (application)
EP 14198210 A 20141216; JP 2013268067 A 20131225; US 201414580984 A 20141223